Convert a manual mill into an accurate CNC

[@basaloborrajo]

Great job!

[@alfmart0000]

Thks

[@FranciscoArias-s7d]

Excelent!!!! Congratulations

[@alfmart0000]

Thks

[@alfmart0000]

Thks

[@RGVPJV]

Fantastic

[@xyzspec82]

Nice, subscribed 😊

[@alfmart0000]

Thanks

[@seabreezecoffeeroasters7994]

Nice simple Video 👍Waiting for a Weiss VM48H (3kW 4000RPM spindle) to arrive so this is a good sanity check for my conversion. I cheated and got them to fit the 25mm ballscrews when they built it 😆

[@alfmart0000]

Hi, definitly 25 mm ballscrew will help a lot in the Z axis, in my case not posible to install 25mm for X and Y. Please let me know your accuracy results when available. Cheers

[@seabreezecoffeeroasters7994]

@@alfmart0000 Will do. They also have made a dedicated casting for the Z axis Ball Screw housing which I will be interested to look at when it gets here.

[@RGVPJV]

Hi Alfonso, It would have been great if you could share models, drawings and spesifications on how you did this in detail. Might come in handy for those who have the same machinery.

[@alfmart0000]

Hi RGVP, I have prepared a ZIP with the information I have , there are files in pdf and in fusion360 format, and please doble check that dimensions are suitable for your application. Here is the link: 1drv.ms/u/c/483a01a1f4f0930f/EUjgQbTJk9VNhzuu0erC0pYBPNn0OS9ffi_U7yIhPw7V1A?e=pRQBqF Don't hesitate to contact me again for any clarification, I will be very glad to answer you. Regards

[@johannprum6393]

great!!!!!! merci pour ce partage.

[@alfmart0000]

Merci

[@ljwibb8688]

Excellent - but I reckon that some backlash (at least for X and Y) is caused by the ball screw thrust bearings - the ones I purchased only had a weak wave spring to provide "zero backlash". Useless. Ended up designing new mounts with preloaded ACBs - still to make!

[@alfmart0000]

Thanks for your comment, probably you are right, but in my case X backlash is almost zero, and X is the axes with less axial loads. Let me know if you make new mounts with better results....

[@tomahawkcnc5583]

Good job , ditch those bearings and order a set with 7000 series angular contact bearing setup . About double the price but you will get rid of all your backash - well until the ballnuts wear.

[@alfmart0000]

Thanks for your comment, but actually I'm using a good quality angular contact bearing ( www.tuli-shop.com/syk-ball-screw-support-bearing-fk-15 ), and yes, the bearings are very very important for reducing the total backlash of the axis. Regards

[@tomahawkcnc5583]

@alfmart0000 , most people buy the chinese knockoffs that just use cheap deep ball bearings rather than angular contacts , looks like you have didn't fall into that trap. ;)

[@FranciscoArias-s7d]

Excelent!!!! Congratulations

[@alfmart0000]

Thks

[@FranciscoArias-s7d]

Excelent!!!! Congratulations

[@alfmart0000]

Thanks